Sharp AR-5618 Service Manual page 46

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code code
46 11 Copy exposure level adjustment,
individual setting (Photo) 600dpi
19 Exposure mode setting
(Gamma table setting / AUTO
exposure operation mode setting /
PHOTO image process setting)
Used to adjust the shift amount and the inclination value for each density level (1 ~ 5) when the
exposure mode is the PHOTO mode
•The shift amount is the same as the gamma (gradation), and is used to set the overall brightness.
When the shift amount is increased, the overall brightness is decreased.
When the shift amount is decreased, the overall brightness is increased
•The inclination value changes the gamma (gradation).
When the set value is increased, the gamma is increased to increase the contrast.
(Clearer black and white images)
When the set value is decreased, the gamma is decreased to decrease the contrast.
(Increased gradation)
* Press the [%] key to switch between the shift amount and the inclination value.
The 7-seg display shows the mode.
The initial display is "Shift."
Shift is indicated as "b" (Brightness).
Inclination is indicated as "c" (Contrast).
(Example)
[b50] [%] key [c50] [%] key
* Select the adjustment level with the [Light and Dark] keys.
The AUTO/TEXT/PHOTO indicators displays the selected level (Exp. 1 ~ Exp. 5)
* Select PHOTO(Error diffusion) or PHOTO(Dither) with the [AUTO/TEXT/PHOTO] key
LED
PHOTO indicator
TEXT indicator & PHOTO indicator
* Change the shift amount and the inclination value with the Numeric keys.
The set range is [1] ~ [99]. The default is [50].
Change the set value and press the [START] key, and a copy is made at the set value.
Used set for the following three exposure modes. Enter a code number and press the [START] key,
and the entered number is written into the EEPROM and the machine goes into the sub code entry
standby mode. (When the [AUTO/TEXT/PHOTO] key is pressed, the number is written into the
EEPROM and the set item is changed.)
<<Gamma table setting>>
When this simulation is executed, the current set code number of gamma table is displayed.
* When setting the gamma table, no AUTO/TEXT/PHOTO indicators are lighted.
Code number
1 Image quality priority mode
2 Toner consumption priority mode
* If this setting is changed, the set content of SIM46-30 is reset to the default.
<<AUTO exposure mode>>
When the [AUTO/TEXT/PHOTO] key is pressed in gamma table setting, the mode is changed to the
AUTO exposure operation mode setting and the current set code number of the AUTO exposure
operation mode is displayed. (Default: 0)
* When setting the AUTO exposure operation mode, the AUTO indicator is lighted.
Code number
0 Lead edge stop
1 Rear time process
<Photo image process setting>
When the [AUTO/TEXT/PHOTO] key is pressed during the AUTO exposure operation mode setting,
the setting mode is changed to the photo image process setting and the currently set code number of
the photo image process setting is displayed.
* When in the photo image process setting, the [Photo mode lamp] is lighted.
Code number
1
2
AR-5618S SIMULATIONS 7-16
Details of operation
[b50] [%] key [c50]
Exposure mode to be adjusted
PHOTO mode (Error diffusion)
PHOTO mode (Dither)
Setting (Gamma table)
Setting (AUTO exposure operation mode)
Setting (Photo image process setting)
Error diffusion process
Dither process
•••
* Default
* Default
* Default